Pneumatic tire.



' No. 856,743. PATENTED JUNE 11, 19 07.

J 0 THOMSON PNEUMATIC TIRE. APPLICATION IILBI) 1130.4, 1908.

F E r C c UNITED STATES JESSE ORR THOMSON, OF PHILADELPHIA, PENNSYLVANIA.

PNEUMATIC TIRE.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed December 4, 1906. Qerial No. 846,198.

To all whom it may concern:

Be it known that I, JEssE ORR THoMsoN, of the city and county of Philadelphia, State of Penns lvania, have invented an Im rovement in neumatic Tires, of which the ollowin is a specification.

y invention has reference to pneumatic tires and consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings which form a part thereof:

The object of my invention is to so construct a pneumatic tire, suitable for automobiles, that it shall be substantially proof against punctures and have its wearing parts re laced when worn or injured, whereby its li e and durability may be increased.

My invention consists of the usual inner or pneumatic tube combined with a shoe or outer covering having a series of circumferential rubber sections constituting the wearing parts of the shoe.

It further consists in making the said circumferential rubber sectionsremovable and.

attachable withrespect to the shoe by means of metallic fasteners. My invention further consists of forming the circumferential sections of theshoe with lateral interlocking parts, whereby the sectlons engage each other in addition to being independently connected with the shoe pro er.

Fig. 3 is a circumferential section of a portion of the shoe.

A is the inner tube which is inflated with airto form a pneumatic tire. This inner pneumatic tube may be formed in any suitablemanner such as is commonly employed in automobile tires.

' B is-the outer shoe and is usually made of rubber and fabric to give'great strength, as is well known in the art. This shoe may inclose the pneumatic tube A in any suitable manner, the form shownibeing given as an exam ple. The wearing portion of this shoe B is provided we ceive t e greatest wear, and the parts 0 the with a series of circumferential parts CC of which the parts C re least wear. The parts 0 C arepreferably thickest at the extreme periphery of the tire, and decrease somewhat in thickness toward the arts C, being thinnest at the parts 0 Whic are slightly beyond the transverse diameter. These circumferential parts 0 C are also preferably rounded in cross section at their outer surfaces so as to present a greater resistance to lateral slippage or skidding, but the shape of these outer surfaces may be modified to suit the wishes of the manufacturer. These circumferential parts C C are attached to the shoe B in any suitable manner, but preferably by means of screws D extendin through the shoe B and attached to plates TI embedded in the rubber of the circumferential parts C 0. number of these fasteners arranged around the circumference of the shoe,-two of such fasteners for one section C being shown for example in Fig. 3. Any other suitable metallic fastener may be employed in lieu of those shown if so desired.

I prefer-to provide the adjacent parts 0 C with interlockixn parts E e, the arts E constituting circumferential ribs an the parts e constitutin circumferential recesses into which the ribs fit, as clearly shown in Fig. 1. The interlocking of these parts C C may be made in any suitable manner found desirable. If preferred this interlocking may be reinforced by transverse wires F which may pass transversely through the several sections C O- or any portion of them as desired, said wires bein in the nature of binders threaded through t em a proximating to stitching. These wires are s ownin dotted lines in Fig. 1, and are also indicated at three places in There may be any Fig. 2, but it is to be understood that these.

transverse Wires are placed inward throu h the entire circumference of the wheel as esired the three places indicatedin Fig. 2 being merely an example.

In the. matter of the sections C of the shoe, they are made much wider than the sections C, but are thinner at c, and these parts C a but also. act as means to, revent the puncturing of the tires at all vu nerable points.

2 and arranged si By my improvement, itis possible to reading said tube, a series of circumferential reily re air a tire When considerably worn, and movable Wearing sections inclosing the shoe 4 5 there T greatly increase its life over that and arranged side by side in abutting rela- Which is possible Where the tire is formed tion transversely considered, se' arate means 5 With'a shoe of one integral piece. y l for detachably connecting can) of said cir- While I prefer the construction shown, the cumferential sections to the shoe, and trans-- ,Ininor details may be modified'without de-' versely arranged binding Wires threaded 5o partingfrom the spirit of my invention. transversely through the series of circumaving now described my invention, what ferential Wearing sections. I claim as new and desire to secure by Letters 5. A shoe for a pneumatic tire consisting Patent, is: of a tubular portion having a series of con- 1. In a pneumatic tire, the combination of tinuons circumferential Wearing sections C Q 5 5 the inner pneumatic tube with a continuous arranged about its outer circumference m shoe inclosing said tube, a series of continabutting contact and in which the sections I 5 none circumferential removable wearing sec- C are provided with inwardly directed p01 tions inclosing the shoe and arranged side by tions 0, and independent metallicdevices for side in abutting relation transversely con detachably connecting each of the several sidered, and se arate meansfor detachably sections C G to the shoe, whereby they are, connecting eacli of said circumferential secheld transversely and circumferentialy in 2o trons independently to the shoe. close transverse contact with each other and 2. Ina pneumatic tire, the combination oi with the shoe. the inner pneumatic tube with a shoe mclos- 6. A shoe for a pneumatic tire consisting ing said tube, a series of circumferential reof a tubular portion having'a series of cir= movable Wearin sectionsinclosing the shoe cumferenti-al earing sections C C arranged fie by side in abuttingmela about its outer circumference and in which tion transversely considered, and separate the'sections C are rovided with inwardly means for detachably connecting said cir:

cumferential sections to the shoe consisting surface of each of the sections'C being exteof plates embedded in the circumferentiai 3 riorly curved in cross section so as to form a 6 sections and screws extending from the inner, series of parallel circumferential ribs on the side of the shoe and connecting With the outer portion of the tire, and metallic (19", plates. i L vices for iidependently detachably connect- 7 5 3. In a pneumatic tire, the combination of ing the adveral, sections C C to the shoe, the inner pneumatic tube with a shoe incloswhereby they are held in close transverse 35 mg said tube, a series of circumferential recontact with each other and with the slice movable wearing sections inclosing the shoe both transversely and circumferentially.

directed portions 0, t e outer circumferential and arranged side by side transversely c'on- In testimony of which invention, I have 8o sidered and provided with. interlocking cir- I hereunto set my hand. 7 cumferential parts and se arate means for 'l 7 40 detachably connecting sac. 'of said circu-m- JESSE THOMSON ferential sections to the shoe. l

4. In a pneumatic tire, the combination of I the inner pneumatic tube With a shoe inclos Witnesses:

R. M. HUNTER, B. M. KELLY. 

